Wheel or pulley.



PATENTED DEC. 15, 1903.

I No. 747,250.

C. H. SMITH.

WHEEL OR PULLEY.

APPLICATION FILED FEB. e, 190sv RENEWED NOV. 23, 1903.

N0 MODEL.

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UNITED Frames Patented December 15, 1903.

Patent titties.

CHARLES H. SMITlI, OF KALAMAZOO, MICHIGAN, ASSIGNOR TO MARY BIXBY, OFKALAMAZOO, MICHIGAN. h

WHEEL OR PULLEY.

BPECIFICATION forming part of Letters Patent No. 747,250, dated,December 15, 1903.

Application filed February 6, 1908. Renewed November 23, 1903. SerialNo. 182,385. (No model.)

To aZZ tr/72.07% it may concern.-

Be it known that LOHARLns l-I.SM1TH,acitizen of the United States,residing at the city of Kalamazoo, in the county of Kalamazoo and Stateof Michigan, have invented certain new and useful Improvements in Wheelsor Pulleys, of which the following is a specification.

This invention relates to improvements in wheels or pulleys.

The objects of the invention are to provide an improved pulley or wheelby which the shock incident to the sudden application or variation ofthe power delivered thereto or to the load is reduced to a minimum.

Further objects will definitely appear from the detailed description tofollow.

I accomplish the objects of my invention by the devices and meansdescribed in the following specification.

The invention is definitely pointed out in the claims.

A structure embodying the features of my invention is fully illustratedin the accompanying drawings, forming a part of this specification, inwhich- Figure 1 is a side elevation View of my improved pulley or wheellooking from the right of Fig. 2. view taken on line 2 2 of Fig. 1. Fig.3 is a side elevation view of my improved pulley or wheel slightlymodified, the same being shown as applied to a car-wheel. Fig. 4 is adetail sectional view taken on a line corresponding to line 4. 4 of Fig.3.

In the drawings the sectional views are taken looking in the directionof the little arrows at the ends of the section-lines, and similarletters of reference refer to similar parts throughout the severalviews.

Referring to the lettered parts of the drawings, the hub-like sleeve B,having radial arms B B, is secured to the shaft or axle A by a suitablekey. The sleeve B forms a bearing for the wheel 0, which is journaledthereon. The arms B are slotted at B to receive the bolts 6, which areadjustably clamped therein by suitable nuts. On the inwardly-projectingends of the bolts are collars e, on which the rings D are pivotallymounted. The rings D are provided with eyes to receive the hooked endsof the coiled Fig. 2 is a detail cross-sectional spring D. The oppositeend of the coiled spring engages a similar ring D, carried by the boltprojecting inwardly from the spider O" of the wheel, so that the pulleyor wheel is yieldingly connected to the driving-shaft or to the axle bythese springs D. The springs are preferably two in number, oppositelyarranged, as this preserves the balance of the wheel and is found to beentirely sufficient. The pulley or wheel is thus yieldingly connected tothe shaft or axle A, so that any sudden application or variation ofpower or resistance, either to the pulley or to the shaft, is receivedwithout producing a shock, as is the result with wheels of the ordinaryconstruction.

While my improved wheel is particularly adapted for use as a pulley, itis also very desirable for use as car-wheels or the like, and I haveillustrated it in Figs. 3 and 4 adapted for that purpose. When appliedto the driven wheels of street-cars and the like, it obviates to a verylarge extent the objectionable jerking motion in starting and stoppingthe car.

It is evident that my improved wheel is applicable to a great variety ofuses, and an enumeration thereof will not be attempted here.

I desire to remark that with my improved device in operation there is agreat saving of power in the starting of machinery, as the power appliedis stored in the spring and delivered more effectively.

I have illustrated and described my improved wheel in the form preferredby me on account of its simplicity and economy in manufacture. I amaware, however, that it is capable of very great variation in structuraldetails without departing from my invention. known form. The springs canbe connected between the pulley or wheel and shaft in any way that willpermit yielding movement between them.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. The combination of an axle; a sleeve B having radially-projectingarms B carried thereby; a Wheel mounted on said sleeve;

The springs can be of any well slots B in said arms B; bolts eadjustably secured in said slots; bolts carried by said wheel; rings Dpivotally secured to said bolts;

and coiled springs D secured to said rings D 5 allcoacting for thepurpose specified.

2. The combination of an axle; radiallyprojecting slotted arms carriedthereby; bolts adjnstably secured in said slots; a wheel; springs, andpivotal connections for said IO springs to said bolts and Wheel, for thepurpose specified.

3. The combination of an axle; radiallyprojecting slotted arms thereon;bolts adjustably secured in said slots; a wheel; springs secured to saidbolts and to said wheel, for the purpose specified.

In witness whereof I have hereunto set my hand and seal in the presenceof two witnesses.

CHARLES H. SMITH. [L. 3.]

Witnesses:

ETHEL A. TELLER, 02m A. EARL;

